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Old 07-05-2011, 06:28 PM   #1
ikaros61
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Default NATA: Avgas Suit Could Shut Down California GA

This is will be disasterous but sorry for my ignorance but why can't GA aicraft use Unleaded gas??



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Old 07-05-2011, 06:59 PM   #2
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Default Re: NATA: Avgas Suit Could Shut Down California GA

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Originally Posted by ikaros61
This is will be disasterous but sorry for my ignorance but why can't GA aicraft use Unleaded gas??
Some can, others can't.

A short list of some of the issues/concerns (in no particular order):
  • Octane differences. Mogas tops out around 93 octane. Some high-compression aircraft engines need the detonation protection from 100-octane fuel.[/*:m:kxdqh2d0]
  • Vapor pressures. Not sure how real this is, but it's thrown out sometimes as being a potential problem. Mogas is supposedly more likely to vapor-lock some engines.[/*:m:kxdqh2d0]
  • Materials compatibility. Some engines and fuel tanks have components that are not compatible with normal mogas. Almost no plane can handle mogas with 10% or more ethanol mixed in.[/*:m:kxdqh2d0]


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Old 07-05-2011, 07:08 PM   #3
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Default Re: NATA: Avgas Suit Could Shut Down California GA

So what do we do??? What's the solution if any??? Is there a solution?

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Old 07-05-2011, 07:16 PM   #4
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Default Re: NATA: Avgas Suit Could Shut Down California GA

I wouldn't call it the end of GA, there is a gas station 10 miles from my house that sells 100 octane unleaded gas at the pump. When I was racing you could buy 118 octane fuel at the track (I am not sure if that had lead in it). The price of fuel will surely go up.

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Old 07-05-2011, 09:04 PM   #5
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Default Re: NATA: Avgas Suit Could Shut Down California GA

Quote:
Originally Posted by ikaros61
So what do we do??? What's the solution if any??? Is there a solution?
Tens of thousands of words have been written on this topic. I thought AOPA had kind of a "Fuel Replacement Central" website with the latest news, but I can't seem to find it quickly. They have other pages with both background and "what's next" sorts of info, though.

Here are a couple of places to get you started:
The whole issue in a "nutshell" (if several screens-full can be a nutshell): http://www.aopa.org/whatsnew/regulatory/reglead.html
AOPA news on one possible replacement fuel: http://www.aopa.org/newsroom/newsitems/ ... 3-006.html
AOPA story on another contender for a possible replacement fuel: http://www.aopa.org/advocacy/articles/2 ... swift.html
The "Clean 100 Octane Coalition" advocacy group home page (lots of background and current status info available here if you look around): http://www.100octaneformyplane.com/

Google "avgas replacement" or "100LL replacement" or similar to find plenty more.
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Old 04-02-2013, 11:55 AM   #6
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Dismissed.
http://www.generalaviationnews.com/2013/03/lawsuit-on-ga-emissions-dismissed/

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Old 04-02-2013, 02:25 PM   #7
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Get rid of the alcohol in the auto fuel. This is the greatest problem with use in aircraft, Would help the cars (and lawnmowers) too, and save the taxpayer money.

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Old 04-03-2013, 02:34 AM   #8
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The amount of lead in 100 LL is about a gram per gallon which when diluted in the atmosphere becomes so little that it isn't measureable and likely is not at a level that anyone is affected by it. Toxic levels will cause brain damage resulting in reduced IQ, and consequently the potential of more environmentalists in the future, something these groups might view as a positive result, but since the normal background level of lead in our environment is much greater, the chance of anyone being poisoned by our emissions is microscopic at most. I guess it might not be a good idea for little kids to have a playground right beside the runup area of airports.

Eliminating the lead in mogas eliminated the risk to people since the consumption of mogas is about 1000 times as much as avgas and much of this is burned in urban areas. What the EPA etc are after is the last millionth of the potential exposure since nothing really will satisfy them as it would eliminate their reason to exist.

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Old 04-03-2013, 11:03 PM   #9
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Question for the cognoscenti here: If they can make flex fuel cars, why not aircraft capable of using 10% ethanol mogas? Would it be that expensive to retrofit GA aircraft to tolerate ethanol?

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Old 04-03-2013, 11:50 PM   #10
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It's expensive for the USA to tolerate ethanol, about a buck a gallon's worth. But those politicians from midwestern states love how it fuels the campaign coffers via the corn farming lobby, nevermind fueling anything else.



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